Electric hair clipper



Feb. 5, 1929. 1,701,148

A. J. DREMEL,

ELECTRIC HAIR CLIPPER Filed ly 19 6 2 Sheets-Sheet 1 I 1/? w @i &

Feb. 5, 1929. I f 1,701,148

- A. J- DREMEL ELECTRIC HAIR CLIPPER Filedjuly 19 1926 2 Sheets-Sheet 2Patented Feb. s, 1929. 1,701,148 UNITED STATES PATENT OFFICE.

ALBERT J. DREMEL, OF BACINE, WISCONSIN.

ELECTRIC HAIR CLIPPER.

Application filed July 19, 1926. Serial-No. 123,305.

This invention relates to electric hair constructed that although thedevicemay li be subjected to relatively severe jars that In general,this invention is an improvenevertheless the bearings for the revolublementover that disclosed in my priorPatent shaft or crank shaft orsimilar part are so 60 #1,541,334, of June 9, 1925, for electric hairformed that they will automatically align clippers and has the samegeneral objects as themselves, although their supports may those setforth in such patent, such as the have become shifted, and thus aself-aligning provision of an electric hair clipper which set ofbearings for the shaft is provided will run either upon A. C. or D. C.,which whlch will prevent any binding whatsoever, 65

is self-contained, which is of very small size, even under extremeconditions. Further d hi h i lf-ventilating. objects are 'to provide anelectromagnetic Further objects are to provide a novel clipper, in whichthe controlling contacts are form of mounting in which a mainsupportreadily accessible, and in which a novel form ing plate isemployed and carries the electroof cut-off switch or button is employedin 7 magnets, the armature, the stationary clipper Connection with thesecontacts to move the blade, and the bearings for the contacts, contactsthemselves out of operative position switch, and crank shaft, and inwhich the and to thus open the electric circuit of the assembly of theparts upon this main supdevice. porting plate maybe most easily made,and An embodiment of the invention is shown 75 in which the utmostaccessibility of the parts lmthe accompanying drawings in which: isprovided, as the casings or housings are Flgure 1 is a plan view of thedevice with carried directly by said plate, and the plate the casingshown in section; may be removed from the casing as a unit F lgure 2 isa vertical sectional view and will carry all of the operative parts.through the device, such view corresponding 80 2 Further objects are toprovide an electric to a section on the line 2-2 of Figure 1;

hair clipper in which no die castings or other ig re 3 is a sectionalview on the lin cast parts of this type are required, but inf Figu e 2;Y stead, in which the casings and the parts Figure 4 is a plan view ofthe main supthereof may be for d f stampings to porting plate, a part ofthe construction 85 secure the utmost cheapness of construction. beingshown in section;

Further object ar t r vid a l tri Figure 5 is a side elevation of thestructure hair clipper in which a resilient connection shown in Figure 4with the upper bearing is provided between the armature and the 1 he rnk Shaft mi movable clipper blade of such a natur th t Figure 6 is aperspective view of the clip 00 although the movable clipper blade maybe for the magnet ends or cores;

- held stationary, as by clogging, that never- F gure 7 is adiagrammatic view showing theless the armature will continue to executethe electric Connections and the COIItaCtS complete vibrations, and inthis way the The electric hair clipper is provided with clipper bladewill receive slight motions and a main supporting plate 1 of sheet metal05 will thus be caused to work itself out of stamped into the form shownin Figures 4 p the hair which, as stated, may have tempoand 5. Thissheet metal plate 1 is provided rarily clogged the blade. In otherwords, with upturned forward and rear lugs 2 and ,3

the construction is such that the machine whichreceive theattachingscrews 4: and 5 goes on operating, although the movable of theupper and lower casing sections or '100 blade may become clogged, due toforcing it members 6 and 7.- These casing members into too great anamount of hair in a given are stamped from sheet metal and thus thetime. In this way, therefore, a machine is expense of die casting orsimilar construcprovided which continues to function, and tions isavoided.

which will work itself out of any clogged Further, the main supportingplate 1 i 0 condition. provided with the pivot pin 8 for the vibrat- Itis to be understood that these clippers ing armature 9, and withdownwardly exare subject to jars in the normal handling of tending arms10 equipped with a rearwardly the device, and, consequently, danger ofmisslanting lugsall for the reception of fastenalignment of the partswith consequent bind ing members for the stationary blade 12 so mgfrequently results. This invention is that the stationary blade isrigidly carried deslgned to provide a clipper which is so by thesupporting plate 1. Y

The vibrating armature 9 is, as stated, pivotally carried by the pin 8and is provided with a pair of forwardlyextending elongated leaf springsor flat springs 13.

These springs 13 have downwardly extending, rounded ends 14 which fitwithin 'a cutout formed in the movable bladev 15, as

most clearly shown in Figures 1 and 2, with the rounded portions 14 ofthe springs contacting with the faces 16 of the cutout in the movableblade. Further, the stationary plate carries a spring 17 which isprovided with a rectangular arm 18 equipped with a I cutout 19 throughwhich the springs .13 project. This last mentioned spring 17 has itsforward edge bearing upon the movable "blade 15 and, consequently,applying the requisite yielding pressure to such blade to hold it inengagement with the stationary blade 12, such movable blade being guided1 faces to the vibrating armature 9. The

.cores 23 or arms of the magnets are curved at their inner ends, asindicated at 24, to conform to the cylindrical portion 25 (if thearmature, so that the maximum area of ux path is provided. Thesemagnets, it wi 1 be seen, are formed from similar stampings and are"U-shape, and may be very cheaply produced. They are 7 stacked andcomplessed in the form shown and are each held by means of a singlescrew 26, They are prevented from turning by means of the.

clip 27 which asinay be seen from Figure 6 is provided with two channelsto receive the ends 23 of the magnet cores. The screws 26 pass throughthe clip, through themagnet cores, and into the plate 1, such screwsentering the threaded apertures 29 of the plate. Thus an extremely rigidmounting for the magnets is secured and a minimum of fastening members,such asscrews are employed. The channeledportions of theiclip 27 arejoined by means of a circular or disc-like portion 30, which isapertured, as indicated at 31 in Figure 6, to receive the pivot pin 8 ofthe armature. Thus the upper end of the pin is also rigidly supported bymeans of the clip 27, so that the pin is held against loosening evenwhen subjected to the continuous, rapid stresses imposed by thevibrating armature.

Preferably, the supporting plate 1 is p pressed, as indicated in Figure6, such depressed portion furnishing additional room in the casing forthe wires from the electromagnets. Further, by having the supportingplate cut out, as shown in Figure 4,

ventilation may be readily secured, and the air may be drawn from theunder side of the plate, through the plate against the magnet coils, andprojecting through the opening %2 (see Figure 2) ofthe upper casing mem-Adjacent the rear end of the supporting plate 1, an upper support 33 isprovided, and

is equipped with downturned arms 34, as

shown most clearly in Figure 3. llhese arms are provided with feet orlugs35, which are apertured and threaded to receive the screws 36. Thescrews 36 also serve to hold the insulating contact carrying plate 37.

It is to be particularly noted that the support 33 and the plate 1 areeach provided with socketed or spherically recessed por-' tions 38'whichreceive the spherical bearings Y 39 for the crank shaft 40 (it beingnoted that the crank shaft 40 has the flywheel omitted in Figure 3 forthe sake of clearness).

These spherical bearings are elongated to provide elongated bearings forthe crank shaft'40. If the device is subjected to jars and the uppersupport 33 is shifted relative to the main supporting plate 1, no damagecan result, as the spherical bearings insure their. correct and freealignment to thus relieve the crank shaft of any binding whatsoever.

'It is to be noted that the extreme outer end 9 of the armature isslotted and receives the crank 41 of the crank shaft and, consequently,as the armature vibrates the crank shaft is rotated.

The crank shaft is provided with a fly wheel 42 (see Figures 1 and 2)which is in the natureof a, fan, to throw the air outwardly through theaperture 82 in the upper casing. Further, this flywheel insures thecontinuous rotation of the armature and carries the crank past deadcenter. In addi tion to this, the flywheel 42, it will be noted fromFigure 2, is closely adjacent the aperture 32 and,- consequently, .naybe given an initial, spin by the thumb or finger of the operator-instarting the device. 1

In connection with the spherical bearings 39, it is to be noted from Figure 3, that a very simple means has been provided for holding them inplace. This means consists of av U-shap'ed spring 43 whose upper andlower arms are ape'rtured and hold the bearings in their correctpositions within their sockets. Thisspring may be held in place by oneof the screws 36, such spring .being clamped beneath a foot 35 of theupper suport.

The lower end. of the crankshaft 40 is v in reality the movable portionof the contact making device. It is provided with an ear 46, whereby itmay be attached to the insulating plate 37. A pair of stationary contactmembers 47 are secured to the insulating pate, and the cooperating partsof the movable arms 47 and such stationary contacts are equipped withsuitable non-corrosive contact faces. The stationary contacts 4:? areconnected to the coils and 21 of the electromagnets. The other ends ofthe coils are connected together and to a return conductor 48. Oneconductor is also connected to the ill-shaped contact member and isindicated by the reference character 49 in Figure 7. it is to be notedthat the conduc tors have been omitted from Figures 1, 2, and 3 for thesake of clearness. I

in the normal operation of the device, the flat face 44 of the crankshaft allows first one and then the other of the movable contacts toengage its corresponding stationary contact and, consequently, permitsenergiza-- tion of the appropriate electromagnet. This draws thearmature towards that electromagnet and gives a turn or twist to thecrank shaft. Continued rotation causes the cylindrical. portion of thelower end of the crank shaft to open the circuit for the previouslyenergized electromagnet. The flat face 4% of the armature shaft 40 isthen presented towards the other spring arm &6 and, consequently,permits the opposite-electromagnetto become energized. This operationcontinues in rapid succession with consequent vibration of the armature,spinning arms and hold them permanently out of engagement with thestationary contacts, as shown in Figures 2 and 7. The lower end of thepin 52 is equipped with a thumb piece 54: on the under side of thedevice, so that the insulating block 53 may be slid either between thespring fingers or outwardly therefrom.

'Thus, the necessity of a distinct, and separate switch is avoided andthe make and break mechanism for the device itself con- 'stitutes thecontrolling switch for the apparatus.

It is to be particularly noted that applicant has made an electric hairclipper which is of extreme compactness, and may be readily carried inthe hand of the operator, and

may be most easily manipulated.

Further, it will be seen that the device is of very light weight, whichfurther facilitates the easy operation of the device in the actualcutting of the hair.

It is to be noted further that the device may bemade in a veryinexpensive manner, as no die casted or complicated parts are required,but instead in which stampings are employed. As is well known in themanufacture ofthese devices, such construction permits the utmostcheapness of manufacture.

It is to be noted further that a remarkable ease of assembly ispermitted by this device, as the entire operative unit may be assembledat a single time upon the supporting main plate, and that thereafter itis a very simple matter to slip the shells into place and secure them tothe lugs of the main supporting plate.

Further, the main supporting plate directly carries the stationarycutter blade and, consequently, the exact relative position of theseparts is assured.

Although the invention has been described in considerabledetail, suchdesgription is intended as illustrative rather than limiting as theinvention may be variously embodied and as the scope of such inventionis to be determined as claimed.

I claim:

1. An electric hair clipper comprising an electromagnet, a vibratorymember actuated thereby, a pair of clipper blades, one of said bladesbeing movable with reference to the other, and easily deformed resilientmeans interposed between said vibratory member and the relativelymovable clipper blade, said resilient means being relatively extended ascompared with the stroke of said relatively movable clipper blade,whereby said vibratory member maintains its vibratory motion when saidclipperis clogged.

2. An electric hair clipper, comprising a pair of electromagnets, anarmature mounted between said electromagnets, a crank shaft operated bysaid armature, contacts operated by said crank shaft and controllingsaid electromagnets, a stationary clipper blade, a movable clipper bladeassociated therewith, and resilient means connecting said armature andsaid movable clipper blade and permitting said armature to actuate saidcrank shaft throughout complete strokes when said movable clipper bladeis temporarily held stationary.

3. An electrichair clipper, comprising a.

. pair of electromagnets, an armature adapted to vibrate between saidmagnets, a cranlr shaft actuated from said armature, an upper and alowerframe member having sockets formed therein, spherical bearingsfor saidcrank shaft'seated within said'sockets, a stationary clipper blade, amovable clipper blade actuated from said armature, and contactscontrolled by said crank shaft for controlling said electromagnets.

4., An electromagnetic clipper, comprising a supporting plate having adownturned foot, a stationary clipper blade carried by said foot, anelectromagnet, and a vibratory armature carried'by said plate, a movableclipper blade operatively connected to said armature, an upper and alower shell for enclosin I said electromagnet and armature and saiplate, and securing means for attaching said shells to said plate.

5. A11 electromagnetic hair clipper, comprising a supporting plate, apair of electromagnets having U-shaped cores, a Vibratory armaturemounted between said cores, a bearing member for said armature enclosingopposite ends of said cores, securing means passing through said bearingmembers, said cores and said plate, a. stationary clipper blade carriedby said plate, a movable clipper blade operatively coupled to saidarmature, and an enclosing shell secured to said erating with saidstationary blade and actuatedby said member, and an upper and a lowerenclosing shell secured to said plate, said shells being bodilyremovable from said plate to completely expose said electromagnet, saidmovable member and said clipper blades.

In testimony that I claim the foregoing I have hereunto set my hand atMilwaukee,

'in the county of Milwaukee and State of Wisconsin.

ALBERT J. DREMEL.

